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white-space-collapse-001.html
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<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="utf-8">
<title>White space and non-ASCII spaces</title>
<link rel='author' title='Richard Ishida' href='mailto:ishida@w3.org'>
<link rel='help' href='https://drafts.csswg.org/css-text-3/#line-break-transform'>
<meta name="assert" content="Any space immediately following another collapsible space is collapsed to have zero advance width. Only refers to U+0020, not other Unicode spaces.">
<style type='text/css'>
.test span { font-size: 24px; font-family: sans-serif; background-color: #2AA5F7; color: white; }
.ref span { font-size: 24px; font-family: sans-serif; background-color: #270CEF; color: white; }
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<div id='log'></div>
<div id='testNB' class="test"><span>hello           there</span></div>
<div id="refNB" class="ref"><span>hello   there</span></div>
<div id='testEN' class="test"><span>hello           there</span></div>
<div id="refEN" class="ref"><span>hello   there</span></div>
<div id='testEM' class="test"><span>hello           there</span></div>
<div id="refEM" class="ref"><span>hello   there</span></div>
<div id='testTS' class="test"><span>hello           there</span></div>
<div id="refTS" class="ref"><span>hello   there</span></div>
<div id='testZW' class="test"><span>hello   ​       there</span></div>
<div id="refZW" class="ref"><span>hello ​ there</span></div>
<div id='testNNB' class="test"><span>hello           there</span></div>
<div id="refNNB" class="ref"><span>hello   there</span></div>
<div id='testIS' class="test"><span>hello           there</span></div>
<div id="refIS" class="ref"><span>hello   there</span></div>
<div id='testIS2' class="test"><span>缔造真正全球通行           的万维网</span></div>
<div id="refIS2" class="ref"><span>缔造真正全球通行   的万维网</span></div>
<script>
test(function() {
assert_equals(document.getElementById('testNB').firstChild.offsetWidth, document.getElementById('refNB').firstChild.offsetWidth);
}, "no-break space");
test(function() {
assert_equals(document.getElementById('testEN').firstChild.offsetWidth, document.getElementById('refEN').firstChild.offsetWidth);
}, "en space");
test(function() {
assert_equals(document.getElementById('testEM').firstChild.offsetWidth, document.getElementById('refEM').firstChild.offsetWidth);
}, "em space");
test(function() {
assert_equals(document.getElementById('testTS').firstChild.offsetWidth, document.getElementById('refTS').firstChild.offsetWidth);
}, "thin space");
test(function() {
assert_equals(document.getElementById('testZW').firstChild.offsetWidth, document.getElementById('refZW').firstChild.offsetWidth);
}, "zero width space");
test(function() {
assert_equals(document.getElementById('testZW').firstChild.offsetWidth, document.getElementById('refZW').firstChild.offsetWidth);
}, "narrow no-break space");
test(function() {
assert_equals(document.getElementById('testIS').firstChild.offsetWidth, document.getElementById('refIS').firstChild.offsetWidth);
}, "ideographic space");
test(function() {
assert_equals(document.getElementById('testIS2').firstChild.offsetWidth, document.getElementById('refIS2').firstChild.offsetWidth);
}, "ideographic space inside ideographic text");
</script>
<!-- Notes:
The assertion will fail if space is produced for any line in the test paragraph.
-->
</body>
</html>